./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:32:36,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:32:36,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:32:36,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:32:36,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:32:36,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:32:36,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:32:36,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:32:36,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:32:36,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:32:36,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:32:36,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:32:36,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:32:36,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:32:36,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:32:36,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:32:36,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:32:36,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:32:36,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:32:36,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:32:36,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:32:36,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:32:36,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:32:36,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:32:36,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:32:36,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:32:36,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:32:36,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:32:36,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:32:36,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:32:36,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:32:36,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:32:36,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:32:36,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:32:36,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:32:36,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:32:36,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:32:36,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:32:36,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:32:36,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:32:36,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:32:36,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:32:36,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:32:36,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:32:36,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:32:36,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:32:36,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:32:36,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:32:36,802 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:32:36,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:32:36,802 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:32:36,802 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:32:36,803 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:32:36,804 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:32:36,804 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:32:36,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:32:36,804 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:32:36,804 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:32:36,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:32:36,805 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:32:36,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:32:36,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:32:36,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:32:36,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:32:36,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:32:36,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:32:36,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:32:36,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:32:36,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:32:36,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:32:36,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:32:36,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:36,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:32:36,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:32:36,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:32:36,810 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:32:36,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:32:36,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:32:36,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:32:36,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:32:36,810 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2021-11-20 23:32:37,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:32:37,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:32:37,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:32:37,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:32:37,100 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:32:37,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-20 23:32:37,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data/b0598aab7/766b9aa25c4c46ad96dfbbd9b33fce2d/FLAG5c2eef424 [2021-11-20 23:32:37,967 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:32:37,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-20 23:32:38,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data/b0598aab7/766b9aa25c4c46ad96dfbbd9b33fce2d/FLAG5c2eef424 [2021-11-20 23:32:38,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data/b0598aab7/766b9aa25c4c46ad96dfbbd9b33fce2d [2021-11-20 23:32:38,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:32:38,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:32:38,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:38,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:32:38,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:32:38,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:38,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fa1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38, skipping insertion in model container [2021-11-20 23:32:38,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:38,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:32:38,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:32:38,966 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-20 23:32:38,972 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-20 23:32:39,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,917 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,954 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:39,967 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,321 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:32:40,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:32:40,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:32:40,324 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:32:40,325 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:32:40,326 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:32:40,327 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:32:40,327 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:32:40,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:32:40,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:32:40,472 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:32:40,498 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,606 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,606 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,607 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,608 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,644 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,676 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,677 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:40,722 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:32:40,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-20 23:32:40,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-20 23:32:40,841 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,842 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,842 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,843 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,843 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,850 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,851 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,851 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,853 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,853 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,854 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:40,920 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:32:40,921 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:32:40,921 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:32:40,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:32:40,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:32:40,924 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:32:40,925 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:32:40,925 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:32:40,925 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:32:40,926 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:32:41,002 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:32:41,031 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,074 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,074 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,078 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:32:41,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:41,341 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:32:41,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41 WrapperNode [2021-11-20 23:32:41,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:41,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:41,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:32:41,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:32:41,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,631 INFO L137 Inliner]: procedures = 697, calls = 1921, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1060 [2021-11-20 23:32:41,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:41,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:32:41,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:32:41,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:32:41,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:32:41,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:32:41,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:32:41,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:32:41,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (1/1) ... [2021-11-20 23:32:41,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:41,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:41,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:32:41,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:32:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-20 23:32:41,855 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-20 23:32:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-20 23:32:41,855 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-20 23:32:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:32:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 23:32:41,856 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 23:32:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 23:32:41,859 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 23:32:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 23:32:41,859 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 23:32:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-20 23:32:41,859 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-20 23:32:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:32:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:32:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 23:32:41,860 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 23:32:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:32:41,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:32:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-20 23:32:41,866 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-20 23:32:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:32:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:32:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:32:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-20 23:32:41,867 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-20 23:32:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-20 23:32:41,867 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-20 23:32:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:32:41,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:32:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 23:32:41,867 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 23:32:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 23:32:41,868 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 23:32:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:32:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 23:32:41,868 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 23:32:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-20 23:32:41,868 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-20 23:32:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 23:32:41,868 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 23:32:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:32:41,869 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:32:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:32:41,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:32:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-20 23:32:41,869 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-20 23:32:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-20 23:32:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-20 23:32:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:32:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:32:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:32:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-20 23:32:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-20 23:32:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 23:32:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 23:32:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 23:32:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 23:32:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:32:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:32:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:32:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 23:32:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 23:32:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:32:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:32:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:32:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-20 23:32:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-20 23:32:42,304 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:32:42,306 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:32:44,719 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:32:44,990 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:32:44,990 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-20 23:32:44,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:44 BoogieIcfgContainer [2021-11-20 23:32:44,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:32:44,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:32:44,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:32:45,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:32:45,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:38" (1/3) ... [2021-11-20 23:32:45,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c03de97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:45, skipping insertion in model container [2021-11-20 23:32:45,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:41" (2/3) ... [2021-11-20 23:32:45,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c03de97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:45, skipping insertion in model container [2021-11-20 23:32:45,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:44" (3/3) ... [2021-11-20 23:32:45,006 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2021-11-20 23:32:45,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:32:45,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:32:45,079 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:32:45,092 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:32:45,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:32:45,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 199 states have (on average 1.221105527638191) internal successors, (243), 204 states have internal predecessors, (243), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-20 23:32:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-20 23:32:45,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:45,148 INFO L514 BasicCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:45,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash -953197930, now seen corresponding path program 1 times [2021-11-20 23:32:45,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:45,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815512157] [2021-11-20 23:32:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:45,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-20 23:32:45,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:45,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815512157] [2021-11-20 23:32:45,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815512157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:32:45,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399795432] [2021-11-20 23:32:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:45,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:32:45,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:45,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:32:45,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:32:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:46,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 23:32:46,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:32:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-20 23:32:46,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:32:46,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399795432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:46,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:32:46,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2021-11-20 23:32:46,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354821299] [2021-11-20 23:32:46,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:46,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:32:46,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:46,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:32:46,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:32:46,812 INFO L87 Difference]: Start difference. First operand has 389 states, 199 states have (on average 1.221105527638191) internal successors, (243), 204 states have internal predecessors, (243), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 23:32:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:47,757 INFO L93 Difference]: Finished difference Result 710 states and 1085 transitions. [2021-11-20 23:32:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:32:47,759 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106 [2021-11-20 23:32:47,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:47,776 INFO L225 Difference]: With dead ends: 710 [2021-11-20 23:32:47,776 INFO L226 Difference]: Without dead ends: 386 [2021-11-20 23:32:47,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:32:47,798 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:47,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 511 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:32:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-20 23:32:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-20 23:32:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 198 states have (on average 1.1919191919191918) internal successors, (236), 201 states have internal predecessors, (236), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2021-11-20 23:32:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 554 transitions. [2021-11-20 23:32:47,921 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 554 transitions. Word has length 106 [2021-11-20 23:32:47,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:47,923 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 554 transitions. [2021-11-20 23:32:47,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 23:32:47,924 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 554 transitions. [2021-11-20 23:32:47,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 23:32:47,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:47,927 INFO L514 BasicCegarLoop]: trace histogram [11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:47,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:32:48,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 23:32:48,148 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:48,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash -777866516, now seen corresponding path program 1 times [2021-11-20 23:32:48,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:48,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523205705] [2021-11-20 23:32:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:48,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-20 23:32:48,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:48,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523205705] [2021-11-20 23:32:48,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523205705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:32:48,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978953287] [2021-11-20 23:32:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:48,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:32:48,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:48,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:32:48,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:32:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:48,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 2294 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:32:49,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:32:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-20 23:32:49,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:32:49,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978953287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:49,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:32:49,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-20 23:32:49,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194945942] [2021-11-20 23:32:49,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:49,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:32:49,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:49,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:32:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:32:49,352 INFO L87 Difference]: Start difference. First operand 386 states and 554 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:32:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:51,534 INFO L93 Difference]: Finished difference Result 744 states and 1084 transitions. [2021-11-20 23:32:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:32:51,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 118 [2021-11-20 23:32:51,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:51,542 INFO L225 Difference]: With dead ends: 744 [2021-11-20 23:32:51,542 INFO L226 Difference]: Without dead ends: 388 [2021-11-20 23:32:51,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:32:51,546 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 49 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:51,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 1834 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:32:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-20 23:32:51,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-20 23:32:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 199 states have (on average 1.1909547738693467) internal successors, (237), 203 states have internal predecessors, (237), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2021-11-20 23:32:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 568 transitions. [2021-11-20 23:32:51,587 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 568 transitions. Word has length 118 [2021-11-20 23:32:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:51,588 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 568 transitions. [2021-11-20 23:32:51,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:32:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 568 transitions. [2021-11-20 23:32:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-20 23:32:51,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:51,591 INFO L514 BasicCegarLoop]: trace histogram [11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:51,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:32:51,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 23:32:51,810 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash -677546172, now seen corresponding path program 1 times [2021-11-20 23:32:51,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:51,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382793845] [2021-11-20 23:32:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:51,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-20 23:32:52,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382793845] [2021-11-20 23:32:52,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382793845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:32:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815200673] [2021-11-20 23:32:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:52,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:32:52,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:52,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:32:52,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:32:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:52,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:32:52,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:32:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-20 23:32:52,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:32:52,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815200673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:52,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:32:52,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-20 23:32:52,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484652838] [2021-11-20 23:32:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:52,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:32:52,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:32:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:32:52,984 INFO L87 Difference]: Start difference. First operand 388 states and 568 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 23:32:54,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:32:56,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:32:57,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:57,472 INFO L93 Difference]: Finished difference Result 759 states and 1143 transitions. [2021-11-20 23:32:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:32:57,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 126 [2021-11-20 23:32:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:57,479 INFO L225 Difference]: With dead ends: 759 [2021-11-20 23:32:57,479 INFO L226 Difference]: Without dead ends: 401 [2021-11-20 23:32:57,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:32:57,483 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 63 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:57,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 2683 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 23:32:57,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-20 23:32:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 399. [2021-11-20 23:32:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 207 states have (on average 1.1932367149758454) internal successors, (247), 211 states have internal predecessors, (247), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-11-20 23:32:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 599 transitions. [2021-11-20 23:32:57,534 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 599 transitions. Word has length 126 [2021-11-20 23:32:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:57,535 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 599 transitions. [2021-11-20 23:32:57,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 23:32:57,536 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 599 transitions. [2021-11-20 23:32:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-20 23:32:57,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:57,541 INFO L514 BasicCegarLoop]: trace histogram [11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:57,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:32:57,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:32:57,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:57,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1948552153, now seen corresponding path program 1 times [2021-11-20 23:32:57,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:57,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109536427] [2021-11-20 23:32:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:57,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:57,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:32:57,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875933916] [2021-11-20 23:32:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:57,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:32:57,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:57,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:32:57,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:32:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:58,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2454 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:32:58,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:32:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-20 23:32:58,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:32:58,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:58,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109536427] [2021-11-20 23:32:58,743 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:32:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875933916] [2021-11-20 23:32:58,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875933916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:58,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:58,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:32:58,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125826149] [2021-11-20 23:32:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:58,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:32:58,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:32:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:32:58,746 INFO L87 Difference]: Start difference. First operand 399 states and 599 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 23:33:00,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:01,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:01,870 INFO L93 Difference]: Finished difference Result 776 states and 1204 transitions. [2021-11-20 23:33:01,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:33:01,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 135 [2021-11-20 23:33:01,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:01,876 INFO L225 Difference]: With dead ends: 776 [2021-11-20 23:33:01,876 INFO L226 Difference]: Without dead ends: 407 [2021-11-20 23:33:01,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:33:01,883 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 60 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:01,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 2286 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 23:33:01,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-20 23:33:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 399. [2021-11-20 23:33:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 207 states have (on average 1.1932367149758454) internal successors, (247), 211 states have internal predecessors, (247), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-11-20 23:33:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 599 transitions. [2021-11-20 23:33:01,922 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 599 transitions. Word has length 135 [2021-11-20 23:33:01,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:01,924 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 599 transitions. [2021-11-20 23:33:01,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 23:33:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 599 transitions. [2021-11-20 23:33:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-20 23:33:01,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:01,931 INFO L514 BasicCegarLoop]: trace histogram [11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:01,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:33:02,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:33:02,145 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:02,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1814418024, now seen corresponding path program 1 times [2021-11-20 23:33:02,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:02,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583407421] [2021-11-20 23:33:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:02,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:02,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:33:02,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710415976] [2021-11-20 23:33:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:02,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:33:02,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:33:02,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:33:02,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:33:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:02,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:33:02,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:33:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 23:33:03,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:33:03,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583407421] [2021-11-20 23:33:03,124 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:33:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710415976] [2021-11-20 23:33:03,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710415976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:03,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:03,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 23:33:03,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917071618] [2021-11-20 23:33:03,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:03,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:33:03,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:03,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:33:03,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:33:03,126 INFO L87 Difference]: Start difference. First operand 399 states and 599 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-20 23:33:05,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:08,981 INFO L93 Difference]: Finished difference Result 778 states and 1196 transitions. [2021-11-20 23:33:08,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:33:08,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 143 [2021-11-20 23:33:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:08,986 INFO L225 Difference]: With dead ends: 778 [2021-11-20 23:33:08,987 INFO L226 Difference]: Without dead ends: 409 [2021-11-20 23:33:08,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:33:08,990 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 83 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:08,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 3095 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 23:33:08,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-20 23:33:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 399. [2021-11-20 23:33:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 207 states have (on average 1.1932367149758454) internal successors, (247), 211 states have internal predecessors, (247), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-11-20 23:33:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 599 transitions. [2021-11-20 23:33:09,020 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 599 transitions. Word has length 143 [2021-11-20 23:33:09,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:09,020 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 599 transitions. [2021-11-20 23:33:09,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-20 23:33:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 599 transitions. [2021-11-20 23:33:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-20 23:33:09,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:09,023 INFO L514 BasicCegarLoop]: trace histogram [11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:09,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:33:09,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:33:09,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1406351011, now seen corresponding path program 2 times [2021-11-20 23:33:09,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:09,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045072771] [2021-11-20 23:33:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:09,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:09,323 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:33:09,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423640120] [2021-11-20 23:33:09,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:33:09,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:33:09,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:33:09,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:33:09,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:33:09,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 23:33:09,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:33:09,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1881 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:33:09,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:33:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-20 23:33:10,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:33:10,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:10,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045072771] [2021-11-20 23:33:10,195 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:33:10,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423640120] [2021-11-20 23:33:10,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423640120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:10,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:10,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:33:10,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759749924] [2021-11-20 23:33:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:10,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:33:10,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:33:10,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:10,198 INFO L87 Difference]: Start difference. First operand 399 states and 599 transitions. Second operand has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:33:12,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:13,828 INFO L93 Difference]: Finished difference Result 730 states and 1127 transitions. [2021-11-20 23:33:13,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:33:13,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 152 [2021-11-20 23:33:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:13,833 INFO L225 Difference]: With dead ends: 730 [2021-11-20 23:33:13,833 INFO L226 Difference]: Without dead ends: 399 [2021-11-20 23:33:13,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:13,837 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 0 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:13,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1848 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-20 23:33:13,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-20 23:33:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2021-11-20 23:33:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 207 states have (on average 1.1932367149758454) internal successors, (247), 211 states have internal predecessors, (247), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (189), 161 states have call predecessors, (189), 160 states have call successors, (189) [2021-11-20 23:33:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 598 transitions. [2021-11-20 23:33:13,864 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 598 transitions. Word has length 152 [2021-11-20 23:33:13,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:13,866 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 598 transitions. [2021-11-20 23:33:13,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:33:13,867 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 598 transitions. [2021-11-20 23:33:13,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-20 23:33:13,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:13,869 INFO L514 BasicCegarLoop]: trace histogram [11, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:13,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:33:14,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 23:33:14,096 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:14,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2097149718, now seen corresponding path program 3 times [2021-11-20 23:33:14,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:14,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275607911] [2021-11-20 23:33:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:14,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:14,177 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:33:14,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183878988] [2021-11-20 23:33:14,178 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:33:14,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:33:14,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:33:14,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:33:14,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 23:33:14,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:33:14,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:33:14,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-20 23:33:14,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:33:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-20 23:33:15,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:33:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-20 23:33:15,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:15,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275607911] [2021-11-20 23:33:15,735 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:33:15,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183878988] [2021-11-20 23:33:15,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183878988] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:33:15,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1212995747] [2021-11-20 23:33:15,759 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2021-11-20 23:33:15,760 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:33:15,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:33:15,770 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:33:15,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:33:20,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:33:20,431 INFO L244 Elim1Store]: Index analysis took 422 ms [2021-11-20 23:33:38,335 WARN L227 SmtUtils]: Spent 17.82s on a formula simplification. DAG size of input: 1767 DAG size of output: 1175 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:33:38,341 INFO L354 Elim1Store]: treesize reduction 1968, result has 47.2 percent of original size [2021-11-20 23:33:38,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19308 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 196 case distinctions, treesize of input 992 treesize of output 2358 [2021-11-20 23:34:11,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:11,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:11,704 INFO L244 Elim1Store]: Index analysis took 626 ms [2021-11-20 23:34:44,232 WARN L227 SmtUtils]: Spent 32.45s on a formula simplification. DAG size of input: 2161 DAG size of output: 1179 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:34:44,246 INFO L354 Elim1Store]: treesize reduction 3528, result has 33.3 percent of original size [2021-11-20 23:34:44,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19505 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 392 case distinctions, treesize of input 1002 treesize of output 2377 [2021-11-20 23:35:09,992 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-20 23:35:10,126 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-20 23:35:10,914 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-20 23:35:16,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:35:16,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:16,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 23:35:16,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:16,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:16,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:16,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-20 23:35:16,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:16,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 23:35:18,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:18,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:35:18,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:18,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:35:19,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:19,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:35:19,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:19,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:35:19,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:19,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:35:20,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:20,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:35:20,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:20,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:20,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:20,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-20 23:35:20,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:35:20,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:20,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:20,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:20,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 23:35:21,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:21,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:21,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:21,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 23:35:21,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:35:21,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-20 23:35:21,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 22 [2021-11-20 23:35:21,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 23:35:21,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:35:21,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:35:21,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:35:21,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:35:22,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:22,136 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:35:22,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-20 23:35:22,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:35:22,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:35:22,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:35:22,388 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:35:22,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-20 23:35:22,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:35:22,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:35:23,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-20 23:35:23,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-20 23:35:23,641 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:35:23,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 23:35:23,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 23:35:23,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-20 23:35:23,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:35:23,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 23:35:23,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 23:35:25,909 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-20 23:35:27,743 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-20 23:36:15,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:15,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:36:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:15,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:15,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-20 23:36:15,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:15,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:15,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:15,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-20 23:36:16,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:16,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:16,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:16,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-20 23:36:16,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:16,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:16,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:16,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-20 23:36:16,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:36:16,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:36:21,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:22,988 INFO L354 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2021-11-20 23:36:22,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 294 treesize of output 306 [2021-11-20 23:36:23,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:23,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 23:36:23,232 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Some non-self update cases but no top-level DER relation at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:340) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:278) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:36:23,235 INFO L158 Benchmark]: Toolchain (without parser) took 224727.74ms. Allocated memory was 123.7MB in the beginning and 474.0MB in the end (delta: 350.2MB). Free memory was 82.5MB in the beginning and 247.8MB in the end (delta: -165.3MB). Peak memory consumption was 185.0MB. Max. memory is 16.1GB. [2021-11-20 23:36:23,235 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:36:23,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2832.82ms. Allocated memory was 123.7MB in the beginning and 184.5MB in the end (delta: 60.8MB). Free memory was 82.1MB in the beginning and 137.4MB in the end (delta: -55.3MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. [2021-11-20 23:36:23,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 289.18ms. Allocated memory is still 184.5MB. Free memory was 136.4MB in the beginning and 125.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:36:23,237 INFO L158 Benchmark]: Boogie Preprocessor took 129.94ms. Allocated memory is still 184.5MB. Free memory was 125.9MB in the beginning and 116.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:36:23,237 INFO L158 Benchmark]: RCFGBuilder took 3231.88ms. Allocated memory is still 184.5MB. Free memory was 116.5MB in the beginning and 102.4MB in the end (delta: 14.1MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. [2021-11-20 23:36:23,237 INFO L158 Benchmark]: TraceAbstraction took 218238.16ms. Allocated memory was 184.5MB in the beginning and 474.0MB in the end (delta: 289.4MB). Free memory was 101.4MB in the beginning and 247.8MB in the end (delta: -146.4MB). Peak memory consumption was 142.6MB. Max. memory is 16.1GB. [2021-11-20 23:36:23,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2832.82ms. Allocated memory was 123.7MB in the beginning and 184.5MB in the end (delta: 60.8MB). Free memory was 82.1MB in the beginning and 137.4MB in the end (delta: -55.3MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 289.18ms. Allocated memory is still 184.5MB. Free memory was 136.4MB in the beginning and 125.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 129.94ms. Allocated memory is still 184.5MB. Free memory was 125.9MB in the beginning and 116.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 3231.88ms. Allocated memory is still 184.5MB. Free memory was 116.5MB in the beginning and 102.4MB in the end (delta: 14.1MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. * TraceAbstraction took 218238.16ms. Allocated memory was 184.5MB in the beginning and 474.0MB in the end (delta: 289.4MB). Free memory was 101.4MB in the beginning and 247.8MB in the end (delta: -146.4MB). Peak memory consumption was 142.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Some non-self update cases but no top-level DER relation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Some non-self update cases but no top-level DER relation: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-20 23:36:23,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:36:25,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:36:25,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:36:25,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:36:25,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:36:25,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:36:25,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:36:25,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:36:25,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:36:25,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:36:25,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:36:25,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:36:25,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:36:25,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:36:25,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:36:25,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:36:25,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:36:25,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:36:25,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:36:25,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:36:25,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:36:25,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:36:25,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:36:25,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:36:25,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:36:25,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:36:25,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:36:25,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:36:25,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:36:25,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:36:25,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:36:25,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:36:25,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:36:25,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:36:25,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:36:25,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:36:25,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:36:25,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:36:25,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:36:25,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:36:25,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:36:25,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-20 23:36:25,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:36:25,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:36:25,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:36:25,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:36:25,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:36:25,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:36:25,929 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:36:25,930 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:36:25,930 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:36:25,930 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:36:25,931 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:36:25,932 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:36:25,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:36:25,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:36:25,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:36:25,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:36:25,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:36:25,935 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:36:25,935 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:36:25,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:36:25,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:36:25,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:36:25,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:36:25,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:36:25,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:36:25,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:36:25,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:36:25,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:36:25,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:36:25,937 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:36:25,938 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:36:25,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:36:25,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:36:25,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:36:25,939 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2021-11-20 23:36:26,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:36:26,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:36:26,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:36:26,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:36:26,423 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:36:26,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-20 23:36:26,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data/209eb7efa/2c833c076d504eda9403f5e2ab3d366c/FLAG4b3452cc1 [2021-11-20 23:36:27,355 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:36:27,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-20 23:36:27,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data/209eb7efa/2c833c076d504eda9403f5e2ab3d366c/FLAG4b3452cc1 [2021-11-20 23:36:27,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/data/209eb7efa/2c833c076d504eda9403f5e2ab3d366c [2021-11-20 23:36:27,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:36:27,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:36:27,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:36:27,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:36:27,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:36:27,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:27" (1/1) ... [2021-11-20 23:36:27,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a8dd88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:27, skipping insertion in model container [2021-11-20 23:36:27,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:27" (1/1) ... [2021-11-20 23:36:27,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:36:27,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:36:28,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-20 23:36:28,277 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-20 23:36:29,234 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,236 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,289 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,290 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,292 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:29,883 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:36:29,885 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:36:29,889 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:36:29,891 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:36:29,893 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:36:29,896 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:36:29,897 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:36:29,898 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:36:29,910 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:36:29,911 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:36:30,113 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:36:30,175 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,276 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,276 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,277 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,277 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,278 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:36:30,385 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:36:30,415 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-20 23:36:30,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-20 23:36:30,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,487 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,500 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,501 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,561 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:36:30,569 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:36:30,570 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:36:30,571 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:36:30,592 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:36:30,593 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:36:30,595 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:36:30,596 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:36:30,596 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:36:30,597 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:36:30,645 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:36:30,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,696 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,696 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:36:30,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:36:31,038 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:36:31,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31 WrapperNode [2021-11-20 23:36:31,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:36:31,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:36:31,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:36:31,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:36:31,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,316 INFO L137 Inliner]: procedures = 717, calls = 1921, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1041 [2021-11-20 23:36:31,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:36:31,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:36:31,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:36:31,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:36:31,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:36:31,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:36:31,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:36:31,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:36:31,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (1/1) ... [2021-11-20 23:36:31,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:36:31,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:36:31,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:36:31,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:36:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-20 23:36:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-20 23:36:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-20 23:36:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-20 23:36:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:36:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 23:36:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 23:36:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 23:36:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 23:36:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 23:36:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 23:36:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:36:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-20 23:36:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-20 23:36:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-20 23:36:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-20 23:36:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 23:36:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 23:36:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:36:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:36:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-20 23:36:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-20 23:36:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-20 23:36:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-20 23:36:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:36:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:36:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:36:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-20 23:36:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-20 23:36:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-20 23:36:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-20 23:36:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:36:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:36:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 23:36:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 23:36:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 23:36:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-20 23:36:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 23:36:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 23:36:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:36:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 23:36:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 23:36:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-20 23:36:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-20 23:36:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 23:36:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 23:36:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:36:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:36:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:36:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:36:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-20 23:36:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-20 23:36:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-20 23:36:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-20 23:36:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:36:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:36:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-20 23:36:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:36:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-20 23:36:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-20 23:36:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 23:36:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 23:36:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 23:36:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 23:36:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-20 23:36:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:36:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:36:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 23:36:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 23:36:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-20 23:36:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-20 23:36:32,025 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:36:32,027 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:36:36,568 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:36:36,580 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:36:36,580 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-20 23:36:36,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:36 BoogieIcfgContainer [2021-11-20 23:36:36,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:36:36,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:36:36,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:36:36,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:36:36,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:36:27" (1/3) ... [2021-11-20 23:36:36,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b10769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:36, skipping insertion in model container [2021-11-20 23:36:36,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:31" (2/3) ... [2021-11-20 23:36:36,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b10769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:36, skipping insertion in model container [2021-11-20 23:36:36,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:36" (3/3) ... [2021-11-20 23:36:36,592 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2021-11-20 23:36:36,597 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:36:36,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:36:36,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:36:36,656 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:36:36,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:36:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 266 states have (on average 1.2744360902255638) internal successors, (339), 271 states have internal predecessors, (339), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-20 23:36:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-20 23:36:36,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:36,703 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:36,704 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:36,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1226682489, now seen corresponding path program 1 times [2021-11-20 23:36:36,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:36,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091195329] [2021-11-20 23:36:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:36,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:36,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:36,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:36,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:36:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:37,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 23:36:37,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-20 23:36:37,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-20 23:36:38,370 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:38,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091195329] [2021-11-20 23:36:38,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091195329] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:38,371 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:38,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:36:38,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720006842] [2021-11-20 23:36:38,375 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:38,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:36:38,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:36:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:36:38,422 INFO L87 Difference]: Start difference. First operand has 456 states, 266 states have (on average 1.2744360902255638) internal successors, (339), 271 states have internal predecessors, (339), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-20 23:36:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:38,568 INFO L93 Difference]: Finished difference Result 899 states and 1432 transitions. [2021-11-20 23:36:38,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:36:38,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2021-11-20 23:36:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:38,599 INFO L225 Difference]: With dead ends: 899 [2021-11-20 23:36:38,600 INFO L226 Difference]: Without dead ends: 449 [2021-11-20 23:36:38,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:36:38,619 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:38,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:36:38,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-20 23:36:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2021-11-20 23:36:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 261 states have (on average 1.2375478927203065) internal successors, (323), 264 states have internal predecessors, (323), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2021-11-20 23:36:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 641 transitions. [2021-11-20 23:36:38,754 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 641 transitions. Word has length 141 [2021-11-20 23:36:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:38,758 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 641 transitions. [2021-11-20 23:36:38,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-20 23:36:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 641 transitions. [2021-11-20 23:36:38,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-20 23:36:38,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:38,777 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:38,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:39,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:39,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:39,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:39,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1411277843, now seen corresponding path program 1 times [2021-11-20 23:36:39,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:39,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047034677] [2021-11-20 23:36:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:39,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:39,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:39,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:39,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:36:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:39,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:36:39,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 23:36:40,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-20 23:36:41,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:41,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047034677] [2021-11-20 23:36:41,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047034677] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:36:41,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:36:41,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-20 23:36:41,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408597048] [2021-11-20 23:36:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:41,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:41,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:36:41,043 INFO L87 Difference]: Start difference. First operand 449 states and 641 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:36:43,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:43,650 INFO L93 Difference]: Finished difference Result 864 states and 1251 transitions. [2021-11-20 23:36:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:43,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 156 [2021-11-20 23:36:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:43,659 INFO L225 Difference]: With dead ends: 864 [2021-11-20 23:36:43,660 INFO L226 Difference]: Without dead ends: 451 [2021-11-20 23:36:43,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:43,665 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 36 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:43,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2378 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:36:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-20 23:36:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-11-20 23:36:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 262 states have (on average 1.2366412213740459) internal successors, (324), 266 states have internal predecessors, (324), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (172), 158 states have call predecessors, (172), 158 states have call successors, (172) [2021-11-20 23:36:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 656 transitions. [2021-11-20 23:36:43,732 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 656 transitions. Word has length 156 [2021-11-20 23:36:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:43,735 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 656 transitions. [2021-11-20 23:36:43,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:36:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 656 transitions. [2021-11-20 23:36:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-20 23:36:43,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:43,739 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:43,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:43,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:43,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1659857565, now seen corresponding path program 1 times [2021-11-20 23:36:43,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:43,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858531981] [2021-11-20 23:36:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:43,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:43,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:43,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:44,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:36:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:44,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:36:44,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 23:36:45,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-11-20 23:36:46,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:46,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858531981] [2021-11-20 23:36:46,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858531981] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:36:46,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:36:46,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-20 23:36:46,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186175727] [2021-11-20 23:36:46,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:46,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:36:46,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:36:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:36:46,204 INFO L87 Difference]: Start difference. First operand 451 states and 656 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 23:36:48,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:49,595 INFO L93 Difference]: Finished difference Result 887 states and 1324 transitions. [2021-11-20 23:36:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:36:49,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2021-11-20 23:36:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:49,603 INFO L225 Difference]: With dead ends: 887 [2021-11-20 23:36:49,604 INFO L226 Difference]: Without dead ends: 472 [2021-11-20 23:36:49,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:49,608 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 87 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:49,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 3442 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-11-20 23:36:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-20 23:36:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 470. [2021-11-20 23:36:49,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 278 states have (on average 1.2446043165467626) internal successors, (346), 282 states have internal predecessors, (346), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (191), 161 states have call predecessors, (191), 160 states have call successors, (191) [2021-11-20 23:36:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 699 transitions. [2021-11-20 23:36:49,645 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 699 transitions. Word has length 164 [2021-11-20 23:36:49,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:49,646 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 699 transitions. [2021-11-20 23:36:49,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 23:36:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 699 transitions. [2021-11-20 23:36:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-20 23:36:49,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:49,650 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:49,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:49,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:49,887 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1958921511, now seen corresponding path program 1 times [2021-11-20 23:36:49,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:49,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831835678] [2021-11-20 23:36:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:49,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:49,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:49,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:49,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:36:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:50,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:36:50,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 23:36:51,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-20 23:36:52,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:52,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831835678] [2021-11-20 23:36:52,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831835678] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:36:52,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:36:52,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-20 23:36:52,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138512936] [2021-11-20 23:36:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:52,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:36:52,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:52,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:36:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:52,247 INFO L87 Difference]: Start difference. First operand 470 states and 699 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 23:36:54,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:55,396 INFO L93 Difference]: Finished difference Result 912 states and 1399 transitions. [2021-11-20 23:36:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:36:55,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2021-11-20 23:36:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:55,404 INFO L225 Difference]: With dead ends: 912 [2021-11-20 23:36:55,405 INFO L226 Difference]: Without dead ends: 478 [2021-11-20 23:36:55,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:55,410 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 59 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:55,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 2936 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 23:36:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-20 23:36:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 470. [2021-11-20 23:36:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 278 states have (on average 1.2446043165467626) internal successors, (346), 282 states have internal predecessors, (346), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (191), 161 states have call predecessors, (191), 160 states have call successors, (191) [2021-11-20 23:36:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 699 transitions. [2021-11-20 23:36:55,455 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 699 transitions. Word has length 179 [2021-11-20 23:36:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:55,456 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 699 transitions. [2021-11-20 23:36:55,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 23:36:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 699 transitions. [2021-11-20 23:36:55,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-20 23:36:55,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:55,461 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:55,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:55,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:36:55,664 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash 110275706, now seen corresponding path program 1 times [2021-11-20 23:36:55,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:55,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212149733] [2021-11-20 23:36:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:55,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:55,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:55,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:55,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:36:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:56,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:36:56,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-20 23:36:57,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-11-20 23:36:58,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:36:58,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212149733] [2021-11-20 23:36:58,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212149733] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:36:58,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:36:58,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2021-11-20 23:36:58,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170110849] [2021-11-20 23:36:58,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:58,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:58,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:58,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:58,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:58,522 INFO L87 Difference]: Start difference. First operand 470 states and 699 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-20 23:37:01,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:02,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:02,717 INFO L93 Difference]: Finished difference Result 934 states and 1418 transitions. [2021-11-20 23:37:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:37:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2021-11-20 23:37:02,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:02,724 INFO L225 Difference]: With dead ends: 934 [2021-11-20 23:37:02,725 INFO L226 Difference]: Without dead ends: 500 [2021-11-20 23:37:02,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:37:02,729 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 131 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:02,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 4000 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 569 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-11-20 23:37:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-20 23:37:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 482. [2021-11-20 23:37:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-20 23:37:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 715 transitions. [2021-11-20 23:37:02,764 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 715 transitions. Word has length 195 [2021-11-20 23:37:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:02,765 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 715 transitions. [2021-11-20 23:37:02,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-20 23:37:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 715 transitions. [2021-11-20 23:37:02,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-20 23:37:02,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:02,769 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:02,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:02,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:02,992 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:02,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2030385312, now seen corresponding path program 2 times [2021-11-20 23:37:02,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:02,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745860731] [2021-11-20 23:37:02,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:37:02,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:02,997 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:03,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:37:07,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:37:07,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:37:07,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:37:07,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-20 23:37:08,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-20 23:37:09,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:09,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745860731] [2021-11-20 23:37:09,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745860731] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:37:09,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:37:09,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-20 23:37:09,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487566426] [2021-11-20 23:37:09,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:09,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:37:09,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:09,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:37:09,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:09,088 INFO L87 Difference]: Start difference. First operand 482 states and 715 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 23:37:12,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:14,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:16,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:17,574 INFO L93 Difference]: Finished difference Result 964 states and 1492 transitions. [2021-11-20 23:37:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:37:17,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 210 [2021-11-20 23:37:17,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:17,581 INFO L225 Difference]: With dead ends: 964 [2021-11-20 23:37:17,581 INFO L226 Difference]: Without dead ends: 518 [2021-11-20 23:37:17,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:17,587 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 21 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:17,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 3029 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 260 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2021-11-20 23:37:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-20 23:37:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 490. [2021-11-20 23:37:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 296 states have (on average 1.25) internal successors, (370), 300 states have internal predecessors, (370), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-20 23:37:17,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 725 transitions. [2021-11-20 23:37:17,621 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 725 transitions. Word has length 210 [2021-11-20 23:37:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:17,622 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 725 transitions. [2021-11-20 23:37:17,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 23:37:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 725 transitions. [2021-11-20 23:37:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-20 23:37:17,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:17,626 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:17,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:17,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:17,848 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:17,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1911943838, now seen corresponding path program 1 times [2021-11-20 23:37:17,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:17,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552150176] [2021-11-20 23:37:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:17,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:17,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:17,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:17,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:37:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:18,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:37:18,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-20 23:37:19,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-20 23:37:20,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:20,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552150176] [2021-11-20 23:37:20,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552150176] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:37:20,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:37:20,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-20 23:37:20,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669979326] [2021-11-20 23:37:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:20,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:37:20,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:20,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:37:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:37:20,472 INFO L87 Difference]: Start difference. First operand 490 states and 725 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 23:37:23,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:25,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:27,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:29,433 INFO L93 Difference]: Finished difference Result 974 states and 1502 transitions. [2021-11-20 23:37:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:37:29,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 210 [2021-11-20 23:37:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:29,440 INFO L225 Difference]: With dead ends: 974 [2021-11-20 23:37:29,441 INFO L226 Difference]: Without dead ends: 520 [2021-11-20 23:37:29,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:37:29,447 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 17 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:29,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 3675 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 277 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2021-11-20 23:37:29,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-20 23:37:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 494. [2021-11-20 23:37:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 300 states have (on average 1.2466666666666666) internal successors, (374), 304 states have internal predecessors, (374), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-20 23:37:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 729 transitions. [2021-11-20 23:37:29,479 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 729 transitions. Word has length 210 [2021-11-20 23:37:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:29,480 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 729 transitions. [2021-11-20 23:37:29,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 23:37:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 729 transitions. [2021-11-20 23:37:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-20 23:37:29,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:29,484 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:29,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:29,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:29,692 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash 349629412, now seen corresponding path program 1 times [2021-11-20 23:37:29,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:29,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109231100] [2021-11-20 23:37:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:29,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:29,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:29,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:29,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:37:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:30,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:37:30,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 152 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-20 23:37:31,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-20 23:37:32,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:32,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109231100] [2021-11-20 23:37:32,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109231100] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:37:32,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [115594232] [2021-11-20 23:37:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:32,393 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:37:32,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:37:32,395 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:37:32,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-20 23:37:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:33,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:37:33,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-20 23:37:33,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-20 23:37:34,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [115594232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:34,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:37:34,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [9, 9] total 15 [2021-11-20 23:37:34,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212361969] [2021-11-20 23:37:34,469 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:34,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:37:34,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:37:34,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:37:34,471 INFO L87 Difference]: Start difference. First operand 494 states and 729 transitions. Second operand has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-20 23:37:36,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:37,459 INFO L93 Difference]: Finished difference Result 918 states and 1376 transitions. [2021-11-20 23:37:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:37:37,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 4 states have call successors, (33) Word has length 210 [2021-11-20 23:37:37,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:37,467 INFO L225 Difference]: With dead ends: 918 [2021-11-20 23:37:37,467 INFO L226 Difference]: Without dead ends: 496 [2021-11-20 23:37:37,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:37:37,472 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 82 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:37,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 3471 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 23:37:37,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-20 23:37:37,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2021-11-20 23:37:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 301 states have (on average 1.2458471760797343) internal successors, (375), 306 states have internal predecessors, (375), 163 states have call successors, (163), 28 states have call predecessors, (163), 30 states have return successors, (203), 162 states have call predecessors, (203), 161 states have call successors, (203) [2021-11-20 23:37:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 741 transitions. [2021-11-20 23:37:37,507 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 741 transitions. Word has length 210 [2021-11-20 23:37:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:37,508 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 741 transitions. [2021-11-20 23:37:37,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-20 23:37:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 741 transitions. [2021-11-20 23:37:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-20 23:37:37,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:37,512 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:37,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:37,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-20 23:37:37,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-20 23:37:37,936 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:37,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:37,937 INFO L85 PathProgramCache]: Analyzing trace with hash -54010710, now seen corresponding path program 1 times [2021-11-20 23:37:37,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:37,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149646286] [2021-11-20 23:37:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:37,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:37,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:37,939 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:37,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 23:37:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:38,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:37:38,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 194 proven. 3 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-20 23:37:39,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2021-11-20 23:37:40,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:40,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149646286] [2021-11-20 23:37:40,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149646286] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:37:40,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1713387453] [2021-11-20 23:37:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:40,595 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:37:40,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:37:40,596 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:37:40,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-20 23:37:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:41,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:37:41,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-20 23:37:42,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-11-20 23:37:43,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1713387453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:43,006 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:37:43,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [9, 9] total 17 [2021-11-20 23:37:43,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891133784] [2021-11-20 23:37:43,007 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:43,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:37:43,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:43,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:37:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:37:43,009 INFO L87 Difference]: Start difference. First operand 496 states and 741 transitions. Second operand has 9 states, 8 states have (on average 11.75) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-20 23:37:45,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:46,515 INFO L93 Difference]: Finished difference Result 923 states and 1401 transitions. [2021-11-20 23:37:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:37:46,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 6 states have call successors, (35) Word has length 233 [2021-11-20 23:37:46,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:46,526 INFO L225 Difference]: With dead ends: 923 [2021-11-20 23:37:46,527 INFO L226 Difference]: Without dead ends: 499 [2021-11-20 23:37:46,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:37:46,534 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 128 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 3447 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:46,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 3447 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 296 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 23:37:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-20 23:37:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2021-11-20 23:37:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 302 states have (on average 1.2450331125827814) internal successors, (376), 307 states have internal predecessors, (376), 163 states have call successors, (163), 28 states have call predecessors, (163), 30 states have return successors, (203), 162 states have call predecessors, (203), 161 states have call successors, (203) [2021-11-20 23:37:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 742 transitions. [2021-11-20 23:37:46,575 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 742 transitions. Word has length 233 [2021-11-20 23:37:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:46,576 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 742 transitions. [2021-11-20 23:37:46,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-20 23:37:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 742 transitions. [2021-11-20 23:37:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-20 23:37:46,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:46,579 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:46,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:46,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-20 23:37:47,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-20 23:37:47,000 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1295913543, now seen corresponding path program 1 times [2021-11-20 23:37:47,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:47,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994420207] [2021-11-20 23:37:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:47,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:47,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:47,004 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:47,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 23:37:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:47,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:37:47,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 184 proven. 3 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 23:37:48,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-20 23:37:49,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:49,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994420207] [2021-11-20 23:37:49,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994420207] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:37:49,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1419406959] [2021-11-20 23:37:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:49,599 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:37:49,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:37:49,600 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:37:49,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-20 23:37:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:50,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:37:50,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-20 23:37:51,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-20 23:37:52,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1419406959] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:37:52,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168086932] [2021-11-20 23:37:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:52,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:37:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:37:52,690 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:37:52,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 23:37:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:53,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:37:53,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-20 23:37:54,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-20 23:37:54,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168086932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:37:54,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:37:54,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 8, 8, 8] total 18 [2021-11-20 23:37:54,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812737571] [2021-11-20 23:37:54,854 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:37:54,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:37:54,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:54,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:37:54,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:37:54,856 INFO L87 Difference]: Start difference. First operand 497 states and 742 transitions. Second operand has 18 states, 17 states have (on average 8.705882352941176) internal successors, (148), 17 states have internal predecessors, (148), 9 states have call successors, (54), 2 states have call predecessors, (54), 6 states have return successors, (52), 6 states have call predecessors, (52), 9 states have call successors, (52) [2021-11-20 23:37:58,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:01,941 INFO L93 Difference]: Finished difference Result 968 states and 1481 transitions. [2021-11-20 23:38:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:38:01,942 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 8.705882352941176) internal successors, (148), 17 states have internal predecessors, (148), 9 states have call successors, (54), 2 states have call predecessors, (54), 6 states have return successors, (52), 6 states have call predecessors, (52), 9 states have call successors, (52) Word has length 234 [2021-11-20 23:38:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:01,953 INFO L225 Difference]: With dead ends: 968 [2021-11-20 23:38:01,953 INFO L226 Difference]: Without dead ends: 525 [2021-11-20 23:38:01,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1406 GetRequests, 1383 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:38:01,959 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 184 mSDsluCounter, 6871 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 7420 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:01,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 7420 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1477 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-20 23:38:01,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-20 23:38:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 519. [2021-11-20 23:38:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 322 states have (on average 1.2453416149068324) internal successors, (401), 327 states have internal predecessors, (401), 164 states have call successors, (164), 28 states have call predecessors, (164), 31 states have return successors, (207), 164 states have call predecessors, (207), 162 states have call successors, (207) [2021-11-20 23:38:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 772 transitions. [2021-11-20 23:38:01,994 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 772 transitions. Word has length 234 [2021-11-20 23:38:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:01,995 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 772 transitions. [2021-11-20 23:38:01,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 8.705882352941176) internal successors, (148), 17 states have internal predecessors, (148), 9 states have call successors, (54), 2 states have call predecessors, (54), 6 states have return successors, (52), 6 states have call predecessors, (52), 9 states have call successors, (52) [2021-11-20 23:38:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 772 transitions. [2021-11-20 23:38:01,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-20 23:38:01,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:01,998 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:02,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:02,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:02,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:02,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:02,604 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash -669052667, now seen corresponding path program 1 times [2021-11-20 23:38:02,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:02,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700179109] [2021-11-20 23:38:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:02,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:02,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:02,607 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:02,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 23:38:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:03,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 23:38:03,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-11-20 23:38:04,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-20 23:38:05,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:05,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700179109] [2021-11-20 23:38:05,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700179109] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:38:05,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:38:05,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-11-20 23:38:05,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506559775] [2021-11-20 23:38:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:05,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:38:05,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:38:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:38:05,352 INFO L87 Difference]: Start difference. First operand 519 states and 772 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-20 23:38:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:06,482 INFO L93 Difference]: Finished difference Result 1002 states and 1495 transitions. [2021-11-20 23:38:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:38:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) Word has length 260 [2021-11-20 23:38:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:06,490 INFO L225 Difference]: With dead ends: 1002 [2021-11-20 23:38:06,490 INFO L226 Difference]: Without dead ends: 519 [2021-11-20 23:38:06,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:38:06,496 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 2 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4100 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:06,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4100 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:38:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-20 23:38:06,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2021-11-20 23:38:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 322 states have (on average 1.2453416149068324) internal successors, (401), 327 states have internal predecessors, (401), 164 states have call successors, (164), 28 states have call predecessors, (164), 31 states have return successors, (206), 164 states have call predecessors, (206), 162 states have call successors, (206) [2021-11-20 23:38:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 771 transitions. [2021-11-20 23:38:06,561 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 771 transitions. Word has length 260 [2021-11-20 23:38:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:06,562 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 771 transitions. [2021-11-20 23:38:06,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-20 23:38:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 771 transitions. [2021-11-20 23:38:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-20 23:38:06,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:06,565 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:06,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:06,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:06,776 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:06,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:06,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1225970241, now seen corresponding path program 1 times [2021-11-20 23:38:06,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:06,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782721865] [2021-11-20 23:38:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:06,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:06,780 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:06,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 23:38:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:07,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1678 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 23:38:07,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:37,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-11-20 23:38:37,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 23:38:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-20 23:38:38,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:54,092 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:38:54,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-20 23:38:54,138 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-20 23:38:54,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-20 23:38:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-20 23:38:54,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:54,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782721865] [2021-11-20 23:38:54,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782721865] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:38:54,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:38:54,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [15] total 22 [2021-11-20 23:38:54,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498479384] [2021-11-20 23:38:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:54,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:38:54,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:38:54,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=402, Unknown=2, NotChecked=0, Total=462 [2021-11-20 23:38:54,473 INFO L87 Difference]: Start difference. First operand 519 states and 771 transitions. Second operand has 16 states, 16 states have (on average 7.75) internal successors, (124), 14 states have internal predecessors, (124), 6 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 6 states have call successors, (33) [2021-11-20 23:39:05,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:08,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:08,974 INFO L93 Difference]: Finished difference Result 1061 states and 1646 transitions. [2021-11-20 23:39:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 23:39:08,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.75) internal successors, (124), 14 states have internal predecessors, (124), 6 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 6 states have call successors, (33) Word has length 271 [2021-11-20 23:39:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:08,983 INFO L225 Difference]: With dead ends: 1061 [2021-11-20 23:39:08,983 INFO L226 Difference]: Without dead ends: 607 [2021-11-20 23:39:08,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 517 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=111, Invalid=697, Unknown=4, NotChecked=0, Total=812 [2021-11-20 23:39:08,988 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 80 mSDsluCounter, 7439 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 8062 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:08,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 8062 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 809 Invalid, 1 Unknown, 503 Unchecked, 6.7s Time] [2021-11-20 23:39:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-20 23:39:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 558. [2021-11-20 23:39:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 350 states have (on average 1.2342857142857142) internal successors, (432), 355 states have internal predecessors, (432), 170 states have call successors, (170), 32 states have call predecessors, (170), 36 states have return successors, (227), 171 states have call predecessors, (227), 168 states have call successors, (227) [2021-11-20 23:39:09,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 829 transitions. [2021-11-20 23:39:09,036 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 829 transitions. Word has length 271 [2021-11-20 23:39:09,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:09,036 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 829 transitions. [2021-11-20 23:39:09,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.75) internal successors, (124), 14 states have internal predecessors, (124), 6 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 6 states have call successors, (33) [2021-11-20 23:39:09,037 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 829 transitions. [2021-11-20 23:39:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-20 23:39:09,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:09,040 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:09,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:09,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:09,258 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:09,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1629961191, now seen corresponding path program 1 times [2021-11-20 23:39:09,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:09,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13980955] [2021-11-20 23:39:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:09,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:09,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:09,261 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:09,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 23:39:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:10,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:39:10,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-20 23:39:11,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2021-11-20 23:39:12,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:12,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13980955] [2021-11-20 23:39:12,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13980955] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:39:12,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:39:12,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-20 23:39:12,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404416850] [2021-11-20 23:39:12,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:12,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:39:12,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:12,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:39:12,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:12,052 INFO L87 Difference]: Start difference. First operand 558 states and 829 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:39:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:12,204 INFO L93 Difference]: Finished difference Result 1087 states and 1706 transitions. [2021-11-20 23:39:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:39:12,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 286 [2021-11-20 23:39:12,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:12,212 INFO L225 Difference]: With dead ends: 1087 [2021-11-20 23:39:12,213 INFO L226 Difference]: Without dead ends: 592 [2021-11-20 23:39:12,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:39:12,219 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 8 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:12,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2628 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:39:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-20 23:39:12,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 574. [2021-11-20 23:39:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 366 states have (on average 1.2322404371584699) internal successors, (451), 371 states have internal predecessors, (451), 170 states have call successors, (170), 32 states have call predecessors, (170), 36 states have return successors, (227), 171 states have call predecessors, (227), 168 states have call successors, (227) [2021-11-20 23:39:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 848 transitions. [2021-11-20 23:39:12,263 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 848 transitions. Word has length 286 [2021-11-20 23:39:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:12,264 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 848 transitions. [2021-11-20 23:39:12,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:39:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 848 transitions. [2021-11-20 23:39:12,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-20 23:39:12,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:12,267 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:12,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-20 23:39:12,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:12,480 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:12,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:12,481 INFO L85 PathProgramCache]: Analyzing trace with hash 873339561, now seen corresponding path program 1 times [2021-11-20 23:39:12,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:12,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397313415] [2021-11-20 23:39:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:12,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:12,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:12,485 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:12,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 23:39:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:13,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 23:39:13,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-20 23:39:14,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2021-11-20 23:39:15,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:15,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397313415] [2021-11-20 23:39:15,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397313415] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:39:15,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:39:15,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 12 [2021-11-20 23:39:15,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180506469] [2021-11-20 23:39:15,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:15,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:39:15,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:39:15,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:39:15,985 INFO L87 Difference]: Start difference. First operand 574 states and 848 transitions. Second operand has 9 states, 8 states have (on average 13.5) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2021-11-20 23:39:18,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:20,522 INFO L93 Difference]: Finished difference Result 1048 states and 1577 transitions. [2021-11-20 23:39:20,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:39:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.5) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) Word has length 272 [2021-11-20 23:39:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:20,530 INFO L225 Difference]: With dead ends: 1048 [2021-11-20 23:39:20,530 INFO L226 Difference]: Without dead ends: 576 [2021-11-20 23:39:20,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:39:20,536 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 175 mSDsluCounter, 3888 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:20,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 4475 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 654 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 23:39:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-11-20 23:39:20,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 544. [2021-11-20 23:39:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 338 states have (on average 1.227810650887574) internal successors, (415), 343 states have internal predecessors, (415), 169 states have call successors, (169), 32 states have call predecessors, (169), 35 states have return successors, (212), 169 states have call predecessors, (212), 167 states have call successors, (212) [2021-11-20 23:39:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 796 transitions. [2021-11-20 23:39:20,571 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 796 transitions. Word has length 272 [2021-11-20 23:39:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:20,572 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 796 transitions. [2021-11-20 23:39:20,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.5) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2021-11-20 23:39:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 796 transitions. [2021-11-20 23:39:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-20 23:39:20,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:20,576 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:20,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:20,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:20,800 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1570105985, now seen corresponding path program 2 times [2021-11-20 23:39:20,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:20,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965419382] [2021-11-20 23:39:20,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:39:20,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:20,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:20,805 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:20,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 23:39:25,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:39:25,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:39:25,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:39:25,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-20 23:39:26,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-20 23:39:27,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:27,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965419382] [2021-11-20 23:39:27,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965419382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:27,644 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:27,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-20 23:39:27,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708140635] [2021-11-20 23:39:27,645 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:27,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:39:27,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:39:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:39:27,647 INFO L87 Difference]: Start difference. First operand 544 states and 796 transitions. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (47), 8 states have call predecessors, (47), 7 states have call successors, (47) [2021-11-20 23:39:30,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:31,285 INFO L93 Difference]: Finished difference Result 990 states and 1469 transitions. [2021-11-20 23:39:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:39:31,287 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (47), 8 states have call predecessors, (47), 7 states have call successors, (47) Word has length 287 [2021-11-20 23:39:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:31,293 INFO L225 Difference]: With dead ends: 990 [2021-11-20 23:39:31,294 INFO L226 Difference]: Without dead ends: 556 [2021-11-20 23:39:31,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:39:31,298 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 85 mSDsluCounter, 5165 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 5767 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:31,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 5767 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 413 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-20 23:39:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-20 23:39:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2021-11-20 23:39:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 344 states have (on average 1.2267441860465116) internal successors, (422), 349 states have internal predecessors, (422), 174 states have call successors, (174), 33 states have call predecessors, (174), 36 states have return successors, (217), 174 states have call predecessors, (217), 172 states have call successors, (217) [2021-11-20 23:39:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 813 transitions. [2021-11-20 23:39:31,340 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 813 transitions. Word has length 287 [2021-11-20 23:39:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:31,341 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 813 transitions. [2021-11-20 23:39:31,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (47), 8 states have call predecessors, (47), 7 states have call successors, (47) [2021-11-20 23:39:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 813 transitions. [2021-11-20 23:39:31,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-20 23:39:31,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:31,345 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:31,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:31,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:31,560 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:31,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:31,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1692182333, now seen corresponding path program 1 times [2021-11-20 23:39:31,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:31,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114815592] [2021-11-20 23:39:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:31,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:31,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:31,565 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:31,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 23:39:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:34,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 23:39:34,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:35,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-20 23:39:35,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-20 23:39:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-20 23:39:36,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:41:56,198 WARN L227 SmtUtils]: Spent 2.31m on a formula simplification. DAG size of input: 72 DAG size of output: 64 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 23:41:59,348 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:41:59,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-20 23:41:59,399 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-20 23:41:59,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-20 23:41:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 9 proven. 50 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-11-20 23:41:59,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:41:59,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114815592] [2021-11-20 23:41:59,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114815592] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:41:59,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:41:59,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 17 [2021-11-20 23:41:59,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274635531] [2021-11-20 23:41:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:59,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:41:59,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:41:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:41:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:41:59,767 INFO L87 Difference]: Start difference. First operand 556 states and 813 transitions. Second operand has 14 states, 13 states have (on average 9.307692307692308) internal successors, (121), 14 states have internal predecessors, (121), 7 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-11-20 23:42:04,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:07,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:11,094 INFO L93 Difference]: Finished difference Result 1133 states and 1731 transitions. [2021-11-20 23:42:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 23:42:11,096 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.307692307692308) internal successors, (121), 14 states have internal predecessors, (121), 7 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 317 [2021-11-20 23:42:11,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:11,101 INFO L225 Difference]: With dead ends: 1133 [2021-11-20 23:42:11,101 INFO L226 Difference]: Without dead ends: 620 [2021-11-20 23:42:11,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2021-11-20 23:42:11,106 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 110 mSDsluCounter, 5682 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 6279 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:11,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 6279 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1304 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-20 23:42:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-20 23:42:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 582. [2021-11-20 23:42:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 368 states have (on average 1.233695652173913) internal successors, (454), 373 states have internal predecessors, (454), 174 states have call successors, (174), 33 states have call predecessors, (174), 38 states have return successors, (236), 176 states have call predecessors, (236), 172 states have call successors, (236) [2021-11-20 23:42:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 864 transitions. [2021-11-20 23:42:11,143 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 864 transitions. Word has length 317 [2021-11-20 23:42:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:11,144 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 864 transitions. [2021-11-20 23:42:11,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.307692307692308) internal successors, (121), 14 states have internal predecessors, (121), 7 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-11-20 23:42:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 864 transitions. [2021-11-20 23:42:11,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-20 23:42:11,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:11,147 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:11,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 23:42:11,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:42:11,360 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:11,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:11,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1564631043, now seen corresponding path program 1 times [2021-11-20 23:42:11,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:42:11,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659457498] [2021-11-20 23:42:11,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:11,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:42:11,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:42:11,365 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:42:11,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 23:42:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:12,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:42:12,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-20 23:42:13,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:42:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2021-11-20 23:42:14,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:42:14,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659457498] [2021-11-20 23:42:14,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659457498] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:14,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:42:14,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-20 23:42:14,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055677190] [2021-11-20 23:42:14,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:14,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:42:14,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:42:14,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:42:14,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:42:14,668 INFO L87 Difference]: Start difference. First operand 582 states and 864 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:42:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:14,761 INFO L93 Difference]: Finished difference Result 1134 states and 1771 transitions. [2021-11-20 23:42:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:42:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 317 [2021-11-20 23:42:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:14,769 INFO L225 Difference]: With dead ends: 1134 [2021-11-20 23:42:14,769 INFO L226 Difference]: Without dead ends: 588 [2021-11-20 23:42:14,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:14,776 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 7 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:14,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1912 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:42:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-11-20 23:42:14,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 582. [2021-11-20 23:42:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 368 states have (on average 1.2282608695652173) internal successors, (452), 373 states have internal predecessors, (452), 174 states have call successors, (174), 33 states have call predecessors, (174), 38 states have return successors, (236), 176 states have call predecessors, (236), 172 states have call successors, (236) [2021-11-20 23:42:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 862 transitions. [2021-11-20 23:42:14,816 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 862 transitions. Word has length 317 [2021-11-20 23:42:14,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:14,816 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 862 transitions. [2021-11-20 23:42:14,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:42:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 862 transitions. [2021-11-20 23:42:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-20 23:42:14,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:14,820 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:14,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 23:42:15,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:42:15,045 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash 14249765, now seen corresponding path program 1 times [2021-11-20 23:42:15,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:42:15,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224646540] [2021-11-20 23:42:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:15,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:42:15,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:42:15,056 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:42:15,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 23:42:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:16,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:42:16,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-11-20 23:42:17,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:42:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2021-11-20 23:42:18,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:42:18,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224646540] [2021-11-20 23:42:18,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224646540] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:18,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:42:18,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-20 23:42:18,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935129824] [2021-11-20 23:42:18,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:18,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:42:18,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:42:18,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:42:18,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:42:18,373 INFO L87 Difference]: Start difference. First operand 582 states and 862 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 23:42:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:18,518 INFO L93 Difference]: Finished difference Result 1109 states and 1700 transitions. [2021-11-20 23:42:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:42:18,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 325 [2021-11-20 23:42:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:18,525 INFO L225 Difference]: With dead ends: 1109 [2021-11-20 23:42:18,525 INFO L226 Difference]: Without dead ends: 587 [2021-11-20 23:42:18,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 644 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:42:18,531 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 7 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:18,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1890 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:42:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-11-20 23:42:18,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 583. [2021-11-20 23:42:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 369 states have (on average 1.2276422764227641) internal successors, (453), 374 states have internal predecessors, (453), 174 states have call successors, (174), 33 states have call predecessors, (174), 38 states have return successors, (236), 176 states have call predecessors, (236), 172 states have call successors, (236) [2021-11-20 23:42:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 863 transitions. [2021-11-20 23:42:18,567 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 863 transitions. Word has length 325 [2021-11-20 23:42:18,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:18,567 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 863 transitions. [2021-11-20 23:42:18,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 23:42:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 863 transitions. [2021-11-20 23:42:18,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-20 23:42:18,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:18,571 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:18,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 23:42:18,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:42:18,784 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:18,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1202136462, now seen corresponding path program 1 times [2021-11-20 23:42:18,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:42:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773233825] [2021-11-20 23:42:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:18,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:42:18,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:42:18,796 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:42:18,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 23:42:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:20,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 23:42:20,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2021-11-20 23:42:21,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:42:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2021-11-20 23:42:22,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:42:22,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773233825] [2021-11-20 23:42:22,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773233825] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:22,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:42:22,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2021-11-20 23:42:22,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727321071] [2021-11-20 23:42:22,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:22,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:42:22,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:42:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:42:22,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:42:22,159 INFO L87 Difference]: Start difference. First operand 583 states and 863 transitions. Second operand has 10 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 23:42:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:23,532 INFO L93 Difference]: Finished difference Result 1117 states and 1701 transitions. [2021-11-20 23:42:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:42:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 325 [2021-11-20 23:42:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:23,540 INFO L225 Difference]: With dead ends: 1117 [2021-11-20 23:42:23,540 INFO L226 Difference]: Without dead ends: 597 [2021-11-20 23:42:23,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:42:23,546 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 4 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5443 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:23,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 5443 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:42:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-20 23:42:23,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 590. [2021-11-20 23:42:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 374 states have (on average 1.2245989304812834) internal successors, (458), 380 states have internal predecessors, (458), 174 states have call successors, (174), 33 states have call predecessors, (174), 40 states have return successors, (255), 177 states have call predecessors, (255), 172 states have call successors, (255) [2021-11-20 23:42:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 887 transitions. [2021-11-20 23:42:23,619 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 887 transitions. Word has length 325 [2021-11-20 23:42:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:23,619 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 887 transitions. [2021-11-20 23:42:23,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 23:42:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 887 transitions. [2021-11-20 23:42:23,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-20 23:42:23,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:23,623 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:23,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-20 23:42:23,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:42:23,844 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash -891415171, now seen corresponding path program 1 times [2021-11-20 23:42:23,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:42:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463672920] [2021-11-20 23:42:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:23,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:42:23,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:42:23,847 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:42:23,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 23:42:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:25,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:42:25,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-20 23:42:26,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:42:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2021-11-20 23:42:27,340 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:42:27,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463672920] [2021-11-20 23:42:27,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463672920] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:27,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:42:27,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-20 23:42:27,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573588590] [2021-11-20 23:42:27,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:27,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:42:27,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:42:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:42:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:42:27,342 INFO L87 Difference]: Start difference. First operand 590 states and 887 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:42:30,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:32,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:33,171 INFO L93 Difference]: Finished difference Result 1158 states and 1856 transitions. [2021-11-20 23:42:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:42:33,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 321 [2021-11-20 23:42:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:33,178 INFO L225 Difference]: With dead ends: 1158 [2021-11-20 23:42:33,178 INFO L226 Difference]: Without dead ends: 604 [2021-11-20 23:42:33,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:42:33,185 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 15 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:33,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2448 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2021-11-20 23:42:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-20 23:42:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 592. [2021-11-20 23:42:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 376 states have (on average 1.2234042553191489) internal successors, (460), 382 states have internal predecessors, (460), 174 states have call successors, (174), 33 states have call predecessors, (174), 40 states have return successors, (255), 177 states have call predecessors, (255), 172 states have call successors, (255) [2021-11-20 23:42:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 889 transitions. [2021-11-20 23:42:33,222 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 889 transitions. Word has length 321 [2021-11-20 23:42:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:33,222 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 889 transitions. [2021-11-20 23:42:33,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:42:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 889 transitions. [2021-11-20 23:42:33,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-20 23:42:33,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:33,226 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:33,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 23:42:33,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:42:33,448 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:33,449 INFO L85 PathProgramCache]: Analyzing trace with hash 715521469, now seen corresponding path program 1 times [2021-11-20 23:42:33,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:42:33,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651494294] [2021-11-20 23:42:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:33,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:42:33,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:42:33,451 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:42:33,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 23:42:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:37,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 23:42:37,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:37,886 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 23:42:37,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 5 [2021-11-20 23:42:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-11-20 23:42:38,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:03,694 WARN L227 SmtUtils]: Spent 1.40m on a formula simplification. DAG size of input: 53 DAG size of output: 45 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 23:44:04,688 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-20 23:44:04,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 45 [2021-11-20 23:44:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 9 proven. 52 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-11-20 23:44:05,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:05,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651494294] [2021-11-20 23:44:05,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651494294] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:44:05,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:44:05,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 14 [2021-11-20 23:44:05,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060054723] [2021-11-20 23:44:05,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:05,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:44:05,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:44:05,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:44:05,670 INFO L87 Difference]: Start difference. First operand 592 states and 889 transitions. Second operand has 12 states, 11 states have (on average 10.909090909090908) internal successors, (120), 12 states have internal predecessors, (120), 7 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-11-20 23:44:10,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:13,503 INFO L93 Difference]: Finished difference Result 1193 states and 1909 transitions. [2021-11-20 23:44:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:44:13,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.909090909090908) internal successors, (120), 12 states have internal predecessors, (120), 7 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 321 [2021-11-20 23:44:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:13,510 INFO L225 Difference]: With dead ends: 1193 [2021-11-20 23:44:13,510 INFO L226 Difference]: Without dead ends: 637 [2021-11-20 23:44:13,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2021-11-20 23:44:13,516 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 96 mSDsluCounter, 5107 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 5707 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:13,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 5707 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1210 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-20 23:44:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-11-20 23:44:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 574. [2021-11-20 23:44:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 358 states have (on average 1.2067039106145252) internal successors, (432), 364 states have internal predecessors, (432), 174 states have call successors, (174), 33 states have call predecessors, (174), 40 states have return successors, (255), 177 states have call predecessors, (255), 172 states have call successors, (255) [2021-11-20 23:44:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 861 transitions. [2021-11-20 23:44:13,554 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 861 transitions. Word has length 321 [2021-11-20 23:44:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:13,555 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 861 transitions. [2021-11-20 23:44:13,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.909090909090908) internal successors, (120), 12 states have internal predecessors, (120), 7 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-11-20 23:44:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 861 transitions. [2021-11-20 23:44:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-20 23:44:13,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:13,558 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:13,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:13,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:44:13,780 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:13,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1435376195, now seen corresponding path program 1 times [2021-11-20 23:44:13,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:13,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550796759] [2021-11-20 23:44:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:13,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:13,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:13,783 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:13,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35dd290b-bfae-4667-95e2-45b5bc081f34/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 23:45:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:17,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-20 23:45:17,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:45:17,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:45:18,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 23:45:18,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:45:25,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:45:25,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 23:45:25,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:45:25,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 23:45:26,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:45:26,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 23:45:26,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:45:26,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 23:45:26,402 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:45:26,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2021-11-20 23:45:26,410 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:45:26,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-20 23:45:35,492 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (_ BitVec 64))) (let ((.cse1 (bvadd (_ bv4 64) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|))) (store (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)) .cse1 (select .cse0 .cse1))))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (let ((.cse2 (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|))) (store (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select .cse2 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)) .cse1 (select .cse2 .cse1)))))))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_868| (_ BitVec 64))) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_868| (_ bv0 1))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_868|)))))))) is different from true